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WPCNR SEWER REPORT. By John F. Bailey. April 18, 2007: Water that was not supposed to be in the county sewer lines contributed to the backing up of sewage into about 25 homes in White Plains Sunday. The source of the overflow into the County Sewer Trunkline under Mamaroneck Avenue, which he believes caused the backup of raw sewage into White Plains homes, has not been determined according to Commissioner of Public Works, Joseph Nicoletti.

Joseph “Bud” Nicoletti, White Plains Commissioner of Public Works, shown supervising in the field, relining the Main Street Sewer, 2004, which did not back up Sunday.
Photo, WPCNR News Archive.
Nicoletti attributes the flooding of approximately 200 homes in White Plains to the heaviest rains he has ever seen hit the city. He said the 10% of homes experienced sewer backups due to the county sanitary sewer trunkline being filled to capacity by the time it reached the area where it runs through the Albermarle Road, Beverly Road and Gedney Farms area. The 150 or more other homes reporting extensive flooding, Nicoletti said had it caused by storm water runoff and ground seepage due to saturated grounds, and overflowing storm drains.
Nicoletti said that the sewer line backups occurred primarily in the Albemarle Road Beverly Road area adjacent the Greenway and City Dump, areas closest to the County Sanitary Sewer Line to his knowledge. He did not have location clusters assembled yet, when interviewed Tuesday afternoon. WPCNR has received reports of sewage backups in the Gedney Farms neighborhood, on the other side of Mamaroneck Avenue (East of Albemarle/Beverly) as well.
The Commissioner said the 7-1/2 inches of rain in 16 hours on Sunday (by WPCNR measurement, two months of normal rainfall in less than a day) caused the majority of the flooding in the homes. He blamed ground runoff, saturated ground, and overflowing storm drains for the non-sewer related flooding.
Mystery Penetration of Sewer by
Excess Water.
In the matter of the sewer backups, this was different. This should not have happened, the Commissioner indicated, despite the recordsetting rain. The Commissioner attributed those backups to the county sanitary sewer trunkline to being at capacity. The Commissioner said when water has no place to go it goes back from whence it came, overflowing back along the line into sinks and toilets. It did exactly this at a home on Beverly Road and a home in Gedney Farms that contacted WPCNR.
The Commissioner explained sanitary sewer lines are sealed along their entire length, quarantining them from storm water drain systems, precisely to prevent storm water from entering and over capacitating the sewer system. The question is what made just the Mamaroneck Avenue county sewer line backup in a 12 hour period — something it has not done before ever, in the memory of the Gedney Farms resident we spoke to.
Non-sewage Water Got into Sewer System
The Commissioner said that there had to have been breaches of the county sanitary sewer system “upstream,” either in White Plains, Valhalla, Rye, Purchase, Rye Brook,( communities on the same line, according to the Commissioner).
The Main Street county trunk line which conveys sewage to Yonkers, did not, Nicoletti said, have any backup problems, pointing out that the relining of that sewer by the city at developer expense has been effective.
The trunkline that apparently did cause the backups runs down Mamaroneck Avenue through the city dump then back down Mamaroneck Avenue to the sewage treatment plant in Mamaroneck . Attached to that line, are many of the buildings and homes on the East side of White Plains, as well as the communities of Rye, Purchase, Rye Brook, North White Plains all of which have experienced extensive redevelopment in the last 10 years.
Nicoletti said the breaches could have been caused by “illegal” connections to the county sewer trunkline, or the possibility of persons evacuating water into the sewer traps or sinks in their homes during the storm, “upstream” from the affected areas. According to a longtime resident in Gedney Farms, “these sewer backups have never happened before. Why now? Why this area? My whole house smells like a barn.”
Storm Drain Overflow Should Not Have
Could Not Have Gotten Into Sewer System by Itself.
Nicoletti said the storm drains definitely overflowed, pointing out the water gushing out of personhole covers on Mamaroneck Avenue, and Hartsdale Avenue (shown on WPCNR), as examples of the storm drains being at capacity. Still, he said, that storm water should not have leaked into the sewer system.
If persons were evacuating water seeping into their basement into sinks or sewer line traps connected to their sewer line instead of out doors on the lawn, the incursion on the sewer line by extra water other than sewage effluent could have been considerable.
If the sewer line is running at higher levels because of increased development in White Plains and “upstream” of the city, or because of illegal connections, this might mean the county trunk line down Mamaroneck has a lot less room in it. Extra “illegal” pumping on Sunday into the system could add considerably to normal sewage flow.
But as of this morning, it is a mystery why only a part of the city experienced these sewage backups.
When you’re pumping out water, it is a lot more than you think it is.
In a news report on WINS on the Mamaroneck cleanup, a contractor evacuating water from a gymnasium said flood water had been up to the basketball rims. He said he had removed 160,000 gallons of water from that one facility. Persons pumping out their basements into the sinks or sewer traps “upstream” from White Plains, the combination might have overloaded the sewer line so it effected the Albermarle Road, Beverly Road and Gedney Farms area.
County Sewer Lines Should Be Secure
Commissioner Nicoletti said Westchester County conducted closed circuit television inspections of their sewer lines a decade ago, and executed $40 Million of repairs to the sewer convoy lines, including the Mamaroneck Avenue County Trunk Line in question. Nicoletti also said he had relined the Mamaroneck Avenue sewer to speed flows during White Plains recent “Renaissance,” He said the lines should be secure from storm water contamination.